221210000022 has 32 divisors (see below), whose sum is σ = 484212161664. Its totient is φ = 66814977600.

The previous prime is 221210000003. The next prime is 221210000113. The reversal of 221210000022 is 220000012122.

It is a junction number, because it is equal to n+sod(n) for n = 221209999962 and 221210000007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5438479 + ... + 5479002.

It is an arithmetic number, because the mean of its divisors is an integer number (15131630052).

Almost surely, 2^221210000022 is an apocalyptic number.

221210000022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221210000022 is an abundant number, since it is smaller than the sum of its proper divisors (263002161642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221210000022 is a wasteful number, since it uses less digits than its factorization.

221210000022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10917804.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 221210000022 its reverse (220000012122), we get a palindrome (441210012144).

The spelling of 221210000022 in words is "two hundred twenty-one billion, two hundred ten million, twenty-two", and thus it is an aban number.